https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99790
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-8 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:718c32a39895ea12ff79f05d6001d7401e6e7e11 commit r8-10903-g718c32a39895ea12ff79f05d6001d7401e6e7e11 Author: Jakub Jelinek <ja...@redhat.com> Date: Tue Mar 30 18:15:32 2021 +0200 c++: Fix ICE on PTRMEM_CST in lambda in inline var initializer [PR99790] The following testcase ICEs (since the addition of inline var support), because the lambda contains PTRMEM_CST but finish_function is called for the lambda quite early during parsing it (from finish_lambda_function) when the containing class is still incomplete. That means that during genericization cplus_expand_constant keeps the PTRMEM_CST unmodified, but later nothing lowers it when the class is finalized. Using sizeof etc. on the class in such contexts is rejected by both g++ and clang++, and when the PTRMEM_CST appears e.g. in static var initializers rather than in functions, we handle it correctly because c_parse_final_cleanups -> lower_var_init will handle those cplus_expand_constant when all classes are already finalized. The following patch fixes it by calling cplus_expand_constant again during gimplification, as we are now unconditionally unit at a time, I'd think everything that could be completed will be before we start gimplification. 2021-03-30 Jakub Jelinek <ja...@redhat.com> PR c++/99790 * cp-gimplify.c (cp_gimplify_expr): Handle PTRMEM_CST. * g++.dg/cpp1z/pr99790.C: New test. (cherry picked from commit 7cdd30b43a63832d6f908b2dd64bd19a0817cd7b)
